Chrome //
Extensions 
Chrome
Web store
select chrome_id_no,plugin_tag_line,plugin_name,plugin_icon,sitemap_url,oldvsnew_comment from final_chrome_totaldata_sept2022 where MATCH(plugin_name) AGAINST('+item +price' IN Boolean MODE) order by users desc
Steam Market Item Price Tracker
Steam Market Item Price Tracker allows you to track Steam Community Market item buy/sell orders.
MonoMiru - Item Price & Ranking Checker Button
In the next of a brand name in Amazon, a link to the thing rate, an embedded extension facility.
Item Price Checker
Go to your items' page, Copy/GRAB the links, go to Mailpac's site, copy each item's URL and paste to see final cost!